Hinge.



Patented lune 27, |899. HAFERKORN.

H I N G E (Application led Oct. 2B, 189B.)

(No Model.)

zrsses Q1 w. s. fvwm m; Noms ravens co. Hmmm-rho., wamcvcx, n. c.

UNITED vSTATES PATENT FFIC'E.

CARL HAFERKORN, OF VEISSENFELS, GERMANY.

HINGE.

SPECIFICATION forming part of Letters Patent N o. 627,730, dated June 27, 1899.

' Appiiootion mod oooooor v2s, 1898. serai No. 694,783. tno modelo To a/ZZ whom it may concern.-

Be it known that 1,' CARL HAFERKORN, a subject of the King of Prussia, German Emperor, residing at Weissenfels, in the Kingdom of Prussia, Germany, have invented certain new and useful Improvements in Door or Window Hinges with Lubricating-Cham-v bers, (for which I have applied for patents in England,dated September 26, 1898,No. 20,322; in Sweden, dated September 22, 1898; in Norway, dated September 22, 1898; in Denmark, dated September 20, 1898; in Switzerland, dated September 19, 1898; in France, dated September 24, 1898; in Belgium, dated Septomber 24,1898; in-Italy, dated September 24, 1898; in Spain, dated September 23, 1898; in Portugal, dated September 29, 1898; in Austria, dated September 19, 1898; in Hungary, dated September 20, 1898, and in Germany, dated September 16, 1898,) of which the following is a specification.

This invention relates to a door-hin ge which in consequence of its internal construction is automatically oiled vor. lubricated whenever the door or window, asthe case may be, is opened or closed. The arrangement is such that only a very small quantity of oil from the oilchamber reaches the frictional surfaces.

In the accompanying drawings, Figure 1 is a vertical section of such a door-hinge, while Figs. 2, 3, and 4 show further modifications of the same.

As shown in Fig. 1,-the hinge-pin b, inclosed in the tubular casing a a', is furnished at its upper end with a cone c, which closes an oil-chamber d, provided in the upper end of the sleeve or casing c. Below the cone c the pin b has notches or recesses of cuneiform shape f, while its lower end is serrated, so as to form a clutch g, gearing with the clutch of the lengthening-piece h. This lengtheningpiece is acted upon by a spring t' and is guided by the slot lo and the pin Z, fixed to the casing a. When the door is opened, the upper part of the hinge-casing a is caused to turn, the pin m, fixed thereto, turning with it. The latter pin acts thus on the cuneiform recess f in such a manner that the pin b is prevented from turning at the same time by the slot 7c and the lpin Z, but is, on the contrary, depressed, whereby the cone c discloses the opening in the oil-chamber d until a new cuneiform notch f comes below the pin m1, when the pin b is shot forthwith upward by the spring t' and closes again the opening-in the oil-chamber.. The lubricant or oil escaping from such an opening is uniformly distrib- I uted by a spiral groove n, formed around the hinge-pin b over the whole periphery of the latter. As the serrations of the clutches are cut in such a direction as to be contrary to the cuneiform notches, as soon as the door is shut, and hence when the hinge-casing is j turned in an opposite direction to the former, the pin m is secured'in the cuneiform notch f, and the hinge-pin is caused to turn; The Aserrations of the'clutch g slide downwardt'. e., one over the otherand are thus disconnected from those of the lengthening-piece h, so that when the door is closed the oil-reser-- voir cannot possibly be opened. To prevent the entrance of dust and dirt in the oil-reser- .the hinge-pin o, but is placed by the sideof it.

To allow when the door is moved for the escape of thelubricant from the oil-chamber d and 'for its distribution to the frictional surfaces of the hinge-pin b and of the casing c, now closed at the top of the portion of the hinge Xed to the door, the pin in the casing fixed to the door-frame is connected at about the middle of its length to a link and to a slotted guide e, connected thereto. This s lotted guide c is suitably arranged on tabs projecting from the .lower part of casing a and fixed to the door-posts, whereby the piston d',

located :in the lubricating-cylinder d, is moved o up and down when the door is turned to and fr o. The cylinder communicates with the frictional surfaces of the door-hinge by means of the opening or duct c'. Furthermore, the cylinder d is provided at its upper opening, which serves at the same time as a feed-hole for the lubricant, with a tight cover or lid p, which is furnished at its outer side with two IOO small levers of, prventinga receding turn of the lid or cover. `When the door ,and hence the hinge, is turned, to which hinge the small cylinder d is fixed, the small piston d' is drawn out of the cylinder d in consequence of the somewhat-inclined arrangement of the slotted l guide e, and the lubricant, llowi'ngthe'saidA piston and drawing the lid or cover likewise with it, is fed Whenever the door is,l moved? back into the duct c', whence it reaches the frictional surfaces of the hinge. The lid or cover p olering, with its leveren, .a 4certain amount of resistance to a retrograde motion,

the lubricant is compelledto fpass thronghthe duct c. The lid p will follow on so lon'gas' there is lubricant in the cylinder d. :soon y as the latter :is empty fand requires to "be neled 'the ylevers 0 of the lid for -fccyer pareI loosened and the `lid :is removed. According yto this arrangement 'the lubricant used is liq- `nlid fama-nd it `has the l11d-izanta/ges'that the lubricant Eto be ,fed te :the -flrictionabsurlfaces is constantly `held `under pressure. Neither dirt nor-dust can `find its Way 'to `:the :frictional surfaces of thecas-ingai,"theflatter beingclosed at the ftop.

Fig. 4 `shows', a modification `of the zanrangement shown `in Fig. 112 wherein Yt'hefoill raser-l Voir or chamberidfis arrangedfa-boveithefhingepin b. Theformer contains ilu-'this caseone or more "outlet-openings d?, which when the up-y per hinge part 'et is lturned come `forca short timeabove the openings @of fthe groove n and allow for this time a small quantity of oil to run out.

What I claim, and desire to secure by Letters Patent of the United States, is;-

1. .A hinge provided with an oil-reservoir and means whereby the relative movements :of the two parts of the hinge will cause the opening and closing 'of said reservoir, to permit the flow and cut'o of the lubricant to the working surfaces -of `the hinge.

2. A'hinjge provided with an oil-reservoir; `avalveclosingsaid reservoir and means for opening and closing said valve by the relative movementmef fthetwoipwrts'of theh'mge.

3. `Tn ra hinge., the combination :of :the two leaves thereof., ,a 2inge-pirrn ymeans yfior reciprocating 'the pin, 'said spin haming :a valverat oneend, Iam oil-meservfoirftermedainone of vthe 'hi-ngebarnels and having ram opening `with which ysaid `xfnlrve 'engages, saidf-epe'ni-ng'being controlled for lubricating the hinge, bythe reflprocaitionci the hin'ge-ipifn, substantially v.asdescribed In testimony Vwhereof .I have hereunto set my hand in :the presencefof two witnesses.

CARL HAEFERKORN.

Witnesses:

RUDonPn .FnIcK-n, EK. `WEINBERGER- 

